CN114339958A

CN114339958A - Network access method, network access device, terminal and network side equipment

Info

Publication number: CN114339958A
Application number: CN202011057997.6A
Authority: CN
Inventors: 陈力; 潘学明; 姜大洁; 塔玛拉卡·拉盖施; 孙鹏; 吴凯; 沈晓冬; 李娜
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-09-29
Filing date: 2020-09-29
Publication date: 2022-04-12
Anticipated expiration: 2040-09-29
Also published as: CN114339958B; EP4213546A4; EP4213546A1; US20230239767A1; WO2022068797A1

Abstract

The application discloses a network access method, a network access device, a terminal and network side equipment, and belongs to the technical field of communication. The network access method applied to the terminal comprises the following steps: receiving a reference signal sent by network side equipment; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of an SFN, or the second reference signal is a specific reference signal of a cell or a transmission receiving point; performing an initial access-related operation based on the received reference signal. The application provides a technical scheme that the terminal performs network access based on a specific reference signal of the SFN, so that the terminal can successfully access the SFN, and the terminal does not need to frequently perform cell selection or reselection or switching among cells within the range of the SFN, so that the measurement frequency of the terminal is reduced, and the network overhead and the terminal power consumption can be reduced.

Description

Network access method, network access device, terminal and network side equipment

Technical Field

The present application belongs to the field of communication technologies, and in particular, to a network access method, a network access apparatus, a terminal, and a network side device.

Background

With the increasing deployment frequency band of future communication systems, the coverage area of a single cell (cell) or a Transmission Reception Point (TRP) becomes smaller and smaller, and meanwhile, future mobile communication systems support more high-speed scenes. This brings frequent mobility to the terminal, thereby introducing more terminal measurements, resulting in higher network overhead and terminal power consumption.

Disclosure of Invention

An object of the embodiments of the present application is to provide a network access method, a network access apparatus, a terminal, and a network side device, which can solve the problem that network overhead and terminal power consumption are both high due to frequent mobility of the terminal.

In order to solve the technical problem, the present application is implemented as follows:

in a first aspect, a network access method is provided, which is applied to a terminal, and the method includes:

receiving a reference signal sent by network side equipment; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point;

performing an initial access-related operation based on the received reference signal.

In a second aspect, a network access apparatus is provided, including:

the first receiving module is used for receiving a reference signal sent by network side equipment; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point;

and the execution module is used for executing the initial access correlation operation based on the received reference signal.

In a third aspect, a network access method is provided, which is applied to a network side device, and the method includes:

transmitting a reference signal to a terminal; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point.

In a fourth aspect, a network access apparatus is provided, including:

the first sending module is used for sending a reference signal to the terminal; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point.

In a fifth aspect, there is provided a terminal comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect.

In a sixth aspect, a network-side device is provided, which comprises a processor, a memory, and a program or instructions stored on the memory and executable on the processor, and when executed by the processor, the program or instructions implement the steps of the method according to the third aspect.

In a seventh aspect, there is provided a readable storage medium on which a program or instructions are stored, which program or instructions, when executed by a processor, implement the steps of the method according to the first aspect, or implement the steps of the method according to the third aspect.

In an eighth aspect, a chip is provided, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to execute a network-side device program or instruction, implement the method according to the first aspect, or implement the method according to the third aspect.

In the embodiment of the application, through a system design of Single-Frequency Network (SFN) deployment, a technical scheme that a terminal performs Network access based on a specific reference signal of the SFN is provided, so that the terminal can successfully access the SFN, and since the terminal does not need to frequently perform cell selection or reselection or switching among cells within a SFN range, the measurement Frequency of the terminal is reduced, and thus Network overhead and terminal power consumption can be reduced.

Drawings

FIG. 1 is a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 is a flowchart of a network access method according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a dense network;

fig. 4 is a schematic diagram of an SFN;

fig. 5 is a block diagram of a network access device according to an embodiment of the present application;

fig. 6 is a flowchart of another network access method provided in an embodiment of the present application;

fig. 7 is a block diagram of another network access device provided in an embodiment of the present application;

fig. 8 is a block diagram of a communication device provided in an embodiment of the present application;

fig. 9 is a hardware structure diagram of a network side device according to an embodiment of the present application;

fig. 10 is a hardware configuration diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used are interchangeable under appropriate circumstances such that embodiments of the application can be practiced in sequences other than those illustrated or described herein, and the terms "first" and "second" used herein generally do not denote any order, nor do they denote any order, for example, the first object may be one or more. In addition, "and/or" in the specification and the claims means at least one of connected objects, and a character "/" generally means that a preceding and succeeding related objects are in an "or" relationship.

It is noted that the techniques described in the embodiments of the present application are not limited to Long Term Evolution (LTE)/LTE Evolution (LTE-Advanced) systems, but may also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), and other systems. The terms "system" and "network" in the embodiments of the present application are often used interchangeably, and the described techniques can be used for both the above-mentioned systems and radio technologies, as well as for other systems and radio technologies. However, the following description describes a New Radio (NR) system for purposes of example, and NR terminology is used in much of the description below, although the techniques may also be applied to applications other than NR system applications, such as 6th Generation (6G) communication systems.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network-side device 12. Wherein, the terminal 11 may also be called as a terminal Device or a User Equipment (UE), the terminal 11 may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer) or a notebook Computer, a Personal Digital Assistant (PDA), a palmtop Computer, a netbook, a super-Mobile Personal Computer (UMPC), a Mobile Internet Device (MID), a Wearable Device (Wearable Device) or a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), and other terminal side devices, the Wearable Device includes: bracelets, earphones, glasses and the like. It should be noted that the embodiment of the present application does not limit the specific type of the terminal 11. The network-side device 12 may be a Base Station or a core network, where the Base Station may be referred to as a node B, an evolved node B, an access Point, a Base Transceiver Station (BTS), a radio Base Station, a radio Transceiver, a Basic Service Set (BSS), an Extended Service Set (ESS), a node B, an evolved node B (eNB), a home node B, a WLAN access Point, a WiFi node, a Transmit Receiving Point (TRP), or some other suitable terminology in the field, as long as the same technical effect is achieved, the Base Station is not limited to a specific technical vocabulary, and it should be noted that, in the embodiment of the present application, only the Base Station in the NR system is taken as an example, but a specific type of the Base Station is not limited.

The network access method, the network access apparatus, the network side device and the terminal provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.

Fig. 2 is a flowchart of a network access method provided in an embodiment of the present application, and as shown in fig. 2, the network access method is applied to a terminal, and the method includes the following steps:

step 201: receiving a reference signal sent by network side equipment; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of an SFN, or the second reference signal is a specific reference signal of a cell or a transmission receiving point;

step 202: performing an initial access-related operation based on the received reference signal.

The following description is related to a dense network, mobility in an idle state or an inactive state, SFN, and an existing network access procedure, respectively.

Fig. 3 shows a schematic diagram of a terminal moving in a dense network (dense network).

A low frequency (e.g., FR1) cell has a larger coverage area than a high frequency (e.g., FR2) cell, and when a terminal moves within the coverage area of FR1, the FR2 cell may be continuously changed, but the FR1 cell is not changed. When a terminal initially activates an FR2 cell or switches an FR2 cell, the terminal needs to continuously measure the signal quality of each beam, which results in too long cell activation time or cell switching time due to the large number of beams. For example, the measurement time may reach the order of seconds when certain conditions are met, as follows:

8ms+24*T_rs+T_{uncertainty，MAC}+T_{L1-RSRP，measure}+T_{L1-RSRP,report}+T_HARQ+T_FineTimingthe long measurement time results in high network overhead and high terminal power consumption.

In the process of moving the idle state or the inactive state terminal, the network provides the priority of each frequency point.

For the same-frequency neighbor cell, if the measurement evaluation value (calculated after adding the offset according to the measurement result of the target (or neighbor) cell) of the target (or neighbor) cell is better than the measurement evaluation value (calculated after adding the offset according to the measurement result of the serving cell) of the serving cell, and lasts for a period of time (for example, the period of network configuration), and the terminal stays in the current serving cell for more than a period of time (for example, 1s agreed by the protocol), the terminal reselects the target (or neighbor) cell.

For a high priority inter-frequency (i.e., inter-frequency) or inter-technology (i.e., inter-RAT) neighbor cell, if the measured evaluation value of the target (or neighbor) cell exceeds a threshold value and lasts for a certain period of time (e.g., the network configured time), the terminal reselects to the target (or neighbor) cell.

For a low priority inter-frequency (i.e., inter-frequency) or inter-RAT neighbor cell, if the measurement evaluation value of the target (or neighbor) cell is greater than the threshold value and the measurement evaluation value of the current serving cell is less than the threshold value for a certain duration (e.g., a network configured duration), the terminal reselects to the target (or neighbor) cell.

For an inter-frequency (or inter-frequency) or inter-technology (or inter-RAT) neighboring cell, when the priority of a target (or neighbor) frequency point is the same as that of a current service (or resident) frequency point, the cell reselection method is the same as that of a common-frequency cell.

The idle state or inactive state terminal triggers the connection establishment process by receiving the paging message sent by the network side equipment, thereby carrying out data receiving and sending.

In order to reduce power consumption of the terminal, cell free (SFN) or SFN will be the main deployment in dense network or high speed scenarios. In the SFN transmission scheme, multiple cells or multiple transmission points may transmit the same Signal, there is no co-channel Interference between different cells, and multiple signals may improve Signal to Interference plus Noise Ratio (SINR), transmission quality and coverage effect. The multiple cells constituting the SFN may share the same cell identifier (cell ID), i.e., the ID of a super cell. The multiple cells may transmit signals in SFN transmission, for example, the multiple cells transmit in a wide beam, and a terminal may receive the wide beam transmitted by the multiple cells at a certain time, so as to obtain diversity gain. In the SFN transmission scheme, the terminal does not need to perform cell reselection or handover frequently between cells, for example, the terminal does not need to perform handover (connected mode) frequently between cells, nor cell selection/reselection (cell selection/reselection) frequently between cells in idle mode or inactive mode. Fig. 4 shows a SFN super cell consisting of 7 cells.

Currently, a terminal performs network access (or called system access) by using the following basic procedures: firstly, the terminal carries out initial network searching, wherein the initial network searching comprises the receiving of the reference signal, completes the cell selection or reselection according to the measurement of the reference signal, and then resides in the corresponding cell. Next, broadcasted System Information (SI) including Information required for accessing the System is received. And finally, performing random access according to the acquired information required by system access, and realizing connection of Radio Resource Control (RRC) to the network side equipment.

Although in the SFN transmission scheme, the terminal does not need to perform cell selection or reselection or handover frequently between cells, if the terminal still performs network access according to the existing network access method, the terminal still needs to receive cell-specific reference signals between different cells or transmission receiving points within the SFN range, so that the terminal still needs to perform more measurements, and there still exists a large network overhead and a high terminal power consumption.

In view of this, in order to solve the above problem in the existing network access, in the embodiment of the present application, the reference signal sent by the network side device to the terminal at least includes a first reference signal, where the first reference signal is a specific reference signal of an SFN, and a correlation configuration of the reference signal of each cell is the same as a correlation configuration of the first reference signal within the SFN range. Therefore, when the terminal moves in different cells or transmission receiving points in the SFN range, the terminal does not need to receive the reference signal special for the cell any more, thereby reducing the frequency measured by the terminal and reducing the network overhead and the power consumption of the terminal.

The reference signal sent by the network side device to the terminal may include a second reference signal, that is, a reference signal specific to a cell or a transmission receiving point, in addition to the first reference signal.

The cell or the transmission receiving point refers to a cell or a transmission receiving point within the SFN or the super cell.

The terms "SFN-specific" and "cell or transmission reception point-specific" to which embodiments of the present application relate are to be interpreted as follows, respectively:

SFN specific (SFN/super cell specific), i.e. the associated configuration for each SFN or super cell is independent, and the configuration within the SFN or super cell is the same.

Cell or transmission reception point specific (Cell/TRP specific), i.e. the relative configuration corresponding to each Cell or transmission reception point is independent and the configuration within the range of the Cell or transmission reception point is the same.

In this embodiment of the present application, the terminal may receive a reference signal sent by the network side device in an idle state or an inactive state, and after receiving the reference signal sent by the network side device, the terminal may perform an initial access related operation based on the reference signal, and a related technical scheme of the initial access related operation will be described later.

In the embodiment of the application, through the system design of SFN deployment, a technical scheme that the terminal performs network access based on a specific reference signal of the SFN is provided, so that the terminal can successfully access the SFN, and the terminal does not need to frequently perform cell selection or reselection or switching among cells within the range of the SFN, so that the measurement frequency of the terminal is reduced, the network overhead and the terminal power consumption can be reduced, and the method is suitable for dense networks or high-speed scenes.

It should be noted that the successful access network of the present application includes camping on a corresponding cell through cell selection or reselection (i.e., idle or inactive), or establishing connection to a network side device through RRC connection (i.e., RRC connected).

Optionally, the Reference Signal includes at least one of a Synchronization Signal Block (SSB), a CSI Reference Signal (CSI-RS), a Cell-specific Reference Signal (CRS), a Sounding Reference Signal (SRS), and a Demodulation Reference Signal (DMRS).

In the embodiment of the present application, taking the example that the reference signal includes an SSB, the reference signal may include a cell/TRP specific SSB and an SFN specific SSB, or only include an SFN specific SSB. Wherein the relative configuration of the SSB of each cell/TRP is independent for the cell/TRP specific SSB, and the relative configuration of the SSB of all the cell/TRP in the SFN range is the same for the SFN specific SSB. The relevant Configuration of the SSB may include SSB sequence (sequence), SSB index (index), SS/PBCH block Measurement Timing Configuration (SMTC), and the like.

Optionally, the performing an initial access-related operation based on the received reference signal includes at least one of:

performing cell selection or reselection;

receiving system information sent by the network side equipment;

receiving a paging message sent by the network side equipment;

receiving the advance indication information sent by the network side equipment;

and initiating random access to the network side equipment.

The System Information (SI) may include a Master Information Block (MIB) and a System Information Block (SIB), among others.

The advance indication information may include a Wake-up signaling (WUS), a sleep signaling (GTS), a Downlink Control Information (DCI) with CRC scrambled by PS-RNTI (DCP) signal scrambled by energy-saving PS-RNTI, a paging indication (paging indication), and other messages.

The Random Access is Random Access Channel (RACH) Random Access.

In this embodiment, the terminal receives a paging message (paging) sent by the network side device, which may be understood as that the terminal monitors the paging message sent by the network side device. The terminal receives the advance indication information sent by the network side device, which can be understood as that the terminal monitors the advance indication information sent by the network side device.

Optionally, the performing cell selection or reselection includes:

measuring the reference signal;

according to the measurement result, carrying out cell selection or reselection;

according to the cell selection or reselection result, the terminal is resided in a first cell or a second cell; the first cell is a cell specific to the SFN, or the second cell is a cell specific to a cell or a transmission receiving point.

In this embodiment, the terminal may measure the reference signal in an idle state or an inactive state, for example, the terminal may measure a cell/TRP specific SSB and an SFN specific SSB, or only measure an SFN specific SSB, and the terminal may perform cell selection or reselection according to the measurement result and camp in a cell selected or reselected by the terminal according to the cell selection or reselection result.

Wherein the measurement result may include at least one of: reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), SINR, Block Error Rate (BLER), Received Signal Strength Indication (RSSI).

The cell in which the terminal resides may be a cell specific to the SFN, or may be a cell or transmission reception point specific to the cell or transmission reception point. The cell or the transmission and reception point specific to the cell or the transmission and reception point may be a cell specific to the cell, a transmission and reception point specific to the cell, a cell specific to the transmission and reception point, or a transmission and reception point specific to the transmission and reception point, which is not limited in the present application.

Optionally, the terminal receives system information sent by the network-side device at a resident level; alternatively, the first and second electrodes may be,

the terminal receives the paging message sent by the network side equipment at a resident level; alternatively, the first and second electrodes may be,

the terminal receives the advance indication information sent by the network side equipment at a resident level; alternatively, the first and second electrodes may be,

the terminal initiates random access to the network side equipment at a resident level;

if the terminal resides in the first cell, the level in which the terminal resides is a first level; or, if the terminal resides in the second cell, the level in which the terminal resides is a second level; the first level is an SFN level, and the second level is a cell level or a transmission and reception point level.

In this embodiment, after the terminal performs cell camping, the related information may be received and the random access may be initiated at the camping level.

Specifically, if the terminal Camp (Camp) is at an SFN level (SFN layer), the terminal may perform at least one of the following operations:

paging messages are received at the SFN level.

System messages are received at the SFN level.

Random access is initiated at the SFN level.

If the terminal resides in a cell level or a transmission reception point level (cell/TRP layer), the terminal may perform at least one of the following operations:

the paging message is received at a cell level or a transmission reception point level.

System messages are received at the cell level or transmission receiver level.

Random access is initiated at the cell level or transmission reception point level.

It should be noted that, in actual deployment, the SFN is a range of Super cells, which includes several cells or TRPs, and is generally called as SFN layer. A cell corresponding to the Super cell or the SFN layer is an SFN-specific (specific) cell; and the plurality of cells or TRPs included in the SFN range are cell/TRP layers. The cell/TRP corresponding to the layer is a cell/TRP specific (specific) cell or TRP. Accordingly, the reference signal RS, the system message SI, the Paging message Paging, etc. on the SFN layer are all referred to as the SFN-specific RS, SI, Paging, etc. The reference signal RS, the system message SI, the Paging message Paging, etc. in the cell/TRP layer are all referred to as RS, SI, Paging, etc. specific to the cell/TRP.

Optionally, after the terminal successfully accesses the network, the method further includes:

and receiving a third reference signal sent by the network side equipment, wherein the third reference signal is a reference signal specific to a cell or a transmission receiving point.

Wherein the third reference signal may be the same as or different from the second reference signal.

In this embodiment, after the random access is completed and the terminal successfully accesses the network, the terminal may further receive a reference signal specific to a cell or a transmission receiving point, which is sent by the network side device. Here, the successful access of the terminal to the network may include successful connection in a connected state, or may include successful camping in an idle state or an inactive state.

Thus, the receiving, by the terminal, the reference signal sent by the network-side device may include the following cases:

first, before performing an initial access-related operation, the terminal may receive a first reference signal sent by the network-side device, and after successfully accessing the network, the terminal may also receive a third reference signal sent by the network-side device.

Secondly, before performing the initial access related operation, the terminal may receive the first reference signal, or the first reference signal and the second reference signal, sent by the network side device, and after successfully accessing the network, the terminal may also receive the third reference signal sent by the network side device. That is, even though the terminal has received the reference signal specific to the SFN or the reference signal specific to the SFN and the reference signal specific to the cell or the transmission reception point before the initial access related operation, the terminal may receive the reference signal specific to the cell or the transmission reception point after the cell selection or reselection.

Here, the third reference signal may be, for example, a cell/TRP specific SSB, but may also be other reference signals, such as various types of reference signals, for example, CSI-RS, CRS, SRS, DMRS, and so on.

Optionally, the third reference signal is sent through a system message specific to the SFN, or sent through a system message specific to a cell or a transmission receiving point, or sent through dedicated RRC information, or sent through a message two or a message four (msg.2/4during RACH) in a random access procedure.

The dedicated RRC information may be RRC designated signaling (RRC dedicated signaling), such as RRC configuration/reconfiguration with sync/HO command, and the like.

Optionally, at least one of the paging message and the system message is SFN specific.

In addition, the paging message and the system message may be both specific to the cell or the transmission receiving point, that is, the paging message is specific to the cell or the transmission receiving point, and the system message is also specific to the cell or the transmission receiving point.

Optionally, the paging message and the system message are specific to SFN; alternatively, the first and second electrodes may be,

the paging message is specific to the SFN, and the system message is specific to the cell or the transmission receiving point; alternatively, the first and second electrodes may be,

the paging message is specific to a cell or a transmission receiving point, and the system message is specific to an SFN; alternatively, the first and second electrodes may be,

the paging messages include SFN-specific paging messages and cell-or transmission receiving point-specific paging messages; alternatively, the first and second electrodes may be,

the system messages include SFN-specific system messages as well as cell or transmission reception point-specific system messages.

Optionally, the initiating a random access to the network side device includes:

and under the condition that the system message indicates that random access resources special for the SFN exist, the terminal initiates random access to the network side equipment by using the random access resources.

Further, in the case where a random access resource specific to a cell or a transmission reception point is indicated in the system message, the terminal can perform RACH access using the random access resource specific to the cell or the transmission reception point.

The random access resource mentioned above may be understood as an initial access resource, which may include at least one of the following:

SSBs, i.e., there are multiple periodic transmissions of SSBs;

SMTC, i.e. a configuration with multiple SMTCs;

search spaces (Search spaces), such as common Search space, i.e., a configuration of multiple Search spaces;

a Control resource set (CORESET), such as CORESET #0, i.e., a configuration with multiple CORESETs;

a Bandwidth Part (BWP), such as an initial BWP, including DL initial BWP and/or UL initial BWP, i.e. there is a configuration of multiple initial BWPs;

reference Signal (RS), i.e. a configuration with a plurality of Reference signals.

Optionally, the resources of the first reference signal and the resources of the second reference signal are independent of each other; alternatively, the first and second electrodes may be,

the resources of the first reference signal are a subset of the resources of the second reference signal.

For example, the resources of the SFN Specific SSB can be independent of the resources of the Cell/TRP Specific SSB in the SFN range, or the resources of the SFN Specific SSB can be a subset of the Cell/TRP Specific SSB in the SFN range, for example, one Cell/TRP SSB index is used as the SFN SSB index.

Optionally, the first reference signal and the second reference signal have at least one of the following relationships:

the first reference signal and the second reference signal are respectively mapped on different time domain resources;

the first reference signal and the second reference signal are respectively mapped on different code domain resources;

the first reference signal and the second reference signal are respectively mapped on different frequency domain resources.

In this embodiment, the first reference signal and the second reference signal may be mapped on different Time domain resources, i.e. Time Division Multiplexing (TDM), respectively, for example, the first reference signal and the second reference signal use different SMTCs. The first reference signal and the second reference signal may also be mapped on different Code domain resources, i.e. Code Division Multiplexing (CDM), respectively, for example, the first reference signal and the second reference signal use different Sequence numbers (sequences). The first reference signal and the second reference signal may also be mapped on different Frequency domain resources, respectively, i.e. Frequency Division Multiplexing (FDM), such as the first reference signal and the second reference signal using different synchronization grids (SyncRaster or sync raster).

Optionally, the terminal identifies the first reference signal through at least one of a reference signal Identifier, a Physical Cell Identifier (PCI), frequency domain configuration information, time domain configuration information, and code domain configuration information.

Taking the first reference signal as SFN specific SSB and the second reference signal as cell/TRP specific SSB as an example:

the SFN specific SSB and the cell/TRP specific SSB can use different SSB IDs, so that the terminal can identify the SFN specific SSB through the SSB ID;

the SFN specific SSB and the cell/TRP specific SSB can also use different PCIs, so that the terminal can also identify the SFN specific SSB through the PCIs;

the SFN specific SSB and the cell/TRP specific SSB can also use different frequency bands, so that the terminal can also identify the SFN specific SSB through frequency domain configuration information;

the SFN specific SSB and the cell/TRP specific SSB may also use different time domain configurations, such as different SMTCs, and therefore, the terminal may also identify the SFN specific SSB through the time domain configuration information;

the SFN specific SSB and the cell/TRP specific SSB may also use different code domains, such as different sequences, and thus the terminal may also identify the SFN specific SSB through the code domain configuration information.

Optionally, the first physical cell identifier is the same as the second physical cell identifier; alternatively, the first and second electrodes may be,

the first physical cell identifier and the second physical cell identifier are independent of each other, and at least one of the first physical cell identifier and the second physical cell identifier is used for identifying a cell in which the terminal is located or a transmission receiving point;

the first physical cell identifier is a physical cell identifier specific to the SFN, or the second physical cell identifier is a physical cell identifier of a cell or a transmission receiving point specific to the cell or the transmission receiving point. The first physical cell identifier and the second physical cell identifier are physical cell identifiers corresponding to the first reference signal and the second reference signal, respectively.

The first physical Cell identifier may also be understood as a PCI ID corresponding to an SFN layer, which may be the same as or different from the current Cell/TRP PCI ID. For the latter case, the terminal may determine the cell/TRP range in which the terminal is located by using the SFN layer PCI ID and the cell/TRP PCI ID, and may be applied to operations such as measurement, handover, cell selection or reselection, RRC connection establishment, RRC connection reestablishment, and recovery from an inactive state (resume).

Optionally, the first physical cell identifier is sent to the terminal by the network side device through a system message.

Optionally, if the SFN-specific cell is deployed at the same frequency (i.e. intra-frequency) as the cell or the cell specific to the transmission receiving point, the first physical cell identifier is different from the second physical cell identifier; alternatively, the first and second electrodes may be,

if the SFN-specific cell is deployed at a different frequency (i.e. inter-frequency) than the cell or the transmission reception point-specific cell, the first physical cell identifier is the same as or different from the second physical cell identifier.

The same frequency may refer to the same frequency point or the same frequency band or the same carrier, and the different frequencies may refer to different frequency points or different frequency bands or different carriers.

The cells specific to the SFN may be understood as cells corresponding to the SFN layer (or super cell), and the cells specific to the cell or the transmission reception point may be understood as cells corresponding to the cell/TRP layer. The frequency may be a frequency band, a frequency point, or a carrier. For deployment scenarios of SFN layer, there are the following cases:

first, when the SFN layer and the cell/TRP layer are deployed on the same frequency band, frequency point or carrier, different PCI IDs may be used to distinguish the SFN layer from the cell/TRP layer.

Secondly, when the SFN layer and the cell/TRP layer are deployed on different frequency bands, frequency points or carriers, the SFN layer may use the same or different PCI ID as the cell/TRP layer.

Optionally, if the network is deployed with a high frequency range and a low frequency range, the cell specific to the SFN includes a cell in the low frequency range, and the cell specific to the cell or the transmission and reception point includes a cell in the high frequency range; alternatively, the first and second electrodes may be,

if the network comprises a satellite communication network, the specific cell of the SFN includes a High Altitude Platform Station (HAPS) cell or an upper earth orbit satellite cell, and the specific cell of the SFN or the cell of the transmission and reception point includes a low earth orbit satellite cell or a cell covered by a ground base Station.

The high frequency range may also be referred to as a high-frequency level (high-frequency layer), and the low frequency range may also be referred to as a low-frequency level (low-frequency layer). When the network is deployed with a high-frequency range and a low-frequency range, the cell/TRP corresponding to the low-frequency range may be regarded as an SFN or a super cell, and the cell/TRP corresponding to the high-frequency range may be regarded as a cell/TRP in an SFN/super cell.

For a satellite communication network, the HAPS/satellite cell may be considered as an SFN or a super cell, the low-orbit satellite in the range may be considered as a cell/TRP in the SFN/super cell, or other common cells/TRPs in the range may be considered as cells/TRPs in the SFN/super cell.

Optionally, before the receiving the paging message sent by the network-side device, the method further includes at least one of:

sending an uplink signal (UL signaling) to the network side device, where the uplink signal is used to indicate the terminal identifier or the identifier of the group where the terminal is located;

receiving an advance indication signal sent by the network side device, where the advance indication signal includes at least one of a WUS, a GTS, a DCP, and a pre-indication (pre-indication), and the advance indication signal is used to indicate whether a terminal receives a paging message and/or a Physical Downlink Control Channel (PDCCH) corresponding to the paging message in a plurality of subsequent Discontinuous Reception (DRX) cycles, or to indicate whether there is a paging message of the terminal or a group in which the terminal is located.

The uplink signal may be, for example, RACH or Paging indication (Paging indication), and the purpose of this message is to assist the network side device to confirm the Paging range in which the terminal or the terminal group is located.

Optionally, after the sending the uplink signal to the network side device, the method further includes:

receiving a Response message (UL signaling Response) sent by the network side device, where the Response message is used to indicate at least one of the following:

the network side equipment receives the feedback of the uplink signal;

whether a paging message of the terminal or the group in which the terminal is located exists.

Optionally, the response message carries at least one of the advanced indication signal and indication information, where the indication information is used to indicate transmission receiving point information for receiving the paging message.

Optionally, the advance indication signal is specific to an SFN, or specific to a cell or a transmission receiving point; alternatively, the first and second electrodes may be,

the response message is specific to the SFN or specific to the cell or the transmission receiving point.

For example, the WUS message may be cell/TRP specific or SFN specific, and the UL signaling response may be cell/TRP specific or SFN specific.

The signaling flow includes at least one of the following cases:

the first condition is as follows:

step 1: and the terminal sends an uplink signal to the network side equipment.

Step 2: and the terminal receives the paging message sent by the network side equipment.

Case two:

step 1: and the terminal receives the advance indication signal sent by the network side equipment.

Step 2: and the terminal sends an uplink signal to the network side equipment.

Step 3: and the terminal receives the paging message sent by the network side equipment.

Case three:

step 1: and the terminal sends an uplink signal to the network side equipment.

Step 2: and the terminal receives a response message sent by the network side equipment, wherein the response message can carry the advance indication signal.

Optionally, the method further includes:

obtaining configuration information related to the SFN, wherein the configuration information related to the SFN comprises at least one item of a specific reference signal of the SFN, specific system information of the SFN, specific paging information of the SFN and a random access channel of the SFN.

The reference signal specific to the SFN may be, for example, SFN specific SSB.

Optionally, the terminal acquires the configuration information related to the SFN through at least one of a system broadcast, an RRC dedicated message, and a paging message.

The system broadcast may be, for example, MIB, SIB, etc., and the Paging message may be, for example, Paging RNTI (P-RNTI) PDCCH and/or Physical Downlink Shared Channel (PDSCH) Paging message.

After the RRC connection is established, the network side device may notify the terminal through an RRC dedicated message, such as an RRC release message and a suspend message. Further, when the terminal releases from a cell/TRP specific cell or from an SFN layer, the network side device may notify the terminal through an RRC dedicated message.

In addition, for a terminal that does not support SFN, the terminal regards this cell specific to SFN as a cell prohibited from access (bar), i.e., the terminal is prohibited from accessing the cell specific to SFN.

It should be noted that, in the network access method provided in the embodiment of the present application, the execution main body may be a network access device, or a control module in the network access device for executing the network access method. In the embodiment of the present application, a network access apparatus executing a network access method is taken as an example to describe the network access apparatus provided in the embodiment of the present application.

Fig. 5 is a block diagram of a network access apparatus according to an embodiment of the present application, and as shown in fig. 5, the network access apparatus 300 includes:

a first receiving module 301, configured to receive a reference signal sent by a network side device; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point;

an executing module 302, configured to execute an initial access correlation operation based on the received reference signal.

Optionally, the executing module 302 is configured to at least one of:

performing cell selection or reselection;

receiving system information sent by the network side equipment;

receiving a paging message sent by the network side equipment;

and initiating random access to the network side equipment.

Optionally, the executing module 302 includes:

a measurement sub-module for measuring the reference signal;

the selection submodule is used for carrying out cell selection or reselection according to the measurement result;

the resident submodule is used for the terminal to reside in a first cell or a second cell according to the cell selection or reselection result; the first cell is a cell specific to the SFN, or the second cell is a cell specific to a cell or a transmission receiving point.

Optionally, the executing module 302 is specifically configured to:

receiving system information sent by the network side equipment at a terminal resident level; alternatively, the first and second electrodes may be,

receiving a paging message sent by the network side equipment at a terminal residing level; alternatively, the first and second electrodes may be,

receiving the advance indication information sent by the network side equipment at the level where the terminal resides; alternatively, the first and second electrodes may be,

initiating random access to the network side equipment at the level where the terminal resides;

Optionally, the network access apparatus 300 further includes:

and the second receiving module is configured to receive a third reference signal sent by the network side device after the terminal successfully accesses the network, where the third reference signal is a reference signal specific to a cell or a transmission receiving point.

Optionally, the third reference signal is sent through a system message specific to the SFN, or sent through a system message specific to a cell or a transmission receiving point, or sent through dedicated RRC information, or sent through a message two or a message four in a random access process.

Optionally, the executing module 302 includes:

and the random access sub-module is used for initiating random access to the network side equipment by the terminal by using the random access resource under the condition that the system message indicates that the random access resource special for the SFN exists.

Optionally, the terminal identifies the first reference signal by at least one of a reference signal identifier, a physical cell identifier, frequency domain configuration information, time domain configuration information, and code domain configuration information.

the first physical cell identifier is a physical cell identifier specific to the SFN, or the second physical cell identifier is a physical cell identifier of a cell or a transmission receiving point specific to the cell or the transmission receiving point.

Optionally, if a cell specific to the SFN and a cell specific to a cell or a transmission receiving point are deployed on the same frequency, the first physical cell identifier is different from the second physical cell identifier; alternatively, the first and second electrodes may be,

the first physical cell identifier is the same as or different from the second physical cell identifier if a cell specific to the SFN and a cell specific to a cell or a transmission reception point are deployed on different frequencies.

if the network comprises a satellite communications network, the cells specific to the SFN include cells of high altitude platform stations or cells of high orbit satellites, and the cells specific to the cells or transmission reception points include cells of low orbit satellites or cells covered by terrestrial base stations.

Optionally, the network access apparatus 300 further includes at least one of:

a sending module, configured to send an uplink signal to the network side device, where the uplink signal is used to indicate the terminal identifier or a group identifier where the terminal is located;

a third receiving module, configured to receive an advance indication signal sent by the network side device, where the advance indication signal includes at least one of a wakeup signal WUS, a sleep signal GTS, a DCP, and a pre-indication, and the advance indication signal is used to indicate whether a terminal receives a paging message and/or a PDCCH corresponding to the paging message in a plurality of subsequent discontinuous reception DRX cycles, or indicate whether there is a paging message of the terminal or a group in which the terminal is located.

Optionally, the network access apparatus 300 further includes:

a fourth receiving module, configured to receive a response message sent by the network-side device, where the response message is used to indicate at least one of the following:

the network side equipment receives the feedback of the uplink signal;

Optionally, the reference signal includes at least one of a synchronization signal block SSB, a CSI reference signal CSI-RS, a cell reference signal CRS, a sounding reference signal SRS, and a demodulation reference signal DMRS.

Optionally, the network access apparatus 300 further includes:

an obtaining module, configured to obtain configuration information related to the SFN, where the configuration information related to the SFN includes at least one of a reference signal specific to the SFN, system information specific to the SFN, a paging message specific to the SFN, and a SFN random access channel.

Optionally, the network access apparatus 300 further includes:

and the access forbidding module is used for taking the cell specific to the SFN as the cell for forbidding access by the terminal if the terminal does not support the SFN.

The network access device in the embodiment of the present application may be a device, and may also be a component, an integrated circuit, or a chip in a terminal. The device can be a mobile terminal or a non-mobile terminal. By way of example, the mobile terminal may include, but is not limited to, the above-listed type of terminal 11, and the non-mobile terminal may be a server, a Network Attached Storage (NAS), a Personal Computer (PC), a Television (TV), a teller machine, a kiosk, or the like, and the embodiments of the present application are not limited in particular.

The network access device in the embodiment of the present application may be a device having an operating system. The operating system may be an Android operating system (Android), an iOS operating system, or other possible operating systems, which is not specifically limited in the embodiments of the present application.

The network access device provided in the embodiment of the present application can implement each process implemented by the method embodiment of fig. 2, and achieve the same technical effect, and for avoiding repetition, details are not described here again.

In the embodiment of the application, through the system design of SFN deployment, a technical scheme that a terminal performs network access based on a specific reference signal of the SFN is provided, so that the terminal can successfully access the SFN, and since the terminal does not need to frequently perform cell selection or reselection or switching among cells within the SFN range, the measurement frequency of the terminal is reduced, and thus, the network overhead and the terminal power consumption can be reduced.

Fig. 6 is a flowchart of a network access method provided in an embodiment of the present application, and as shown in fig. 6, the network access method is applied to a network side device, and the method includes the following steps:

step 401: transmitting a reference signal to a terminal; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point.

In the embodiment of the application, through the system design of SFN deployment, a technical scheme for sending a specific reference signal of an SFN to a terminal is provided, so that the terminal can perform network access based on the specific reference signal of the SFN, and the terminal can successfully access the SFN.

Optionally, in a case that the terminal resides in a cell, the method further includes:

sending system information to the terminal at the level where the terminal resides; alternatively, the first and second electrodes may be,

sending a paging message to the terminal at a level at which the terminal resides; alternatively, the first and second electrodes may be,

sending advance indication information to the terminal at a level where the terminal resides;

if the terminal resides in a first cell, the level in which the terminal resides is a first level; or, if the terminal resides in a second cell, the level in which the terminal resides is a second level; the first cell is a cell specific to an SFN, the first level is an SFN level, or the second cell is a cell specific to a cell or a transmission receiving point, and the second level is a cell level or a transmission receiving point level.

and sending a third reference signal to the terminal, wherein the third reference signal is a reference signal specific to a cell or a transmission receiving point.

Optionally, before sending the paging message to the terminal, the method further includes at least one of:

receiving an uplink signal sent by the terminal, wherein the uplink signal is used for indicating the terminal identification or the group identification where the terminal is located;

and sending an advance indication signal to the terminal, wherein the advance indication signal comprises at least one of a wakeup signal WUS, a sleep signal GTS, a DCP and a pre-indication, and the advance indication signal is used for indicating whether the terminal receives a paging message and/or a PDCCH corresponding to the paging message in a plurality of subsequent discontinuous reception DRX periods or indicating whether the terminal or a paging message of a group in which the terminal is located exists.

Optionally, after receiving the uplink signal sent by the terminal, the method further includes:

sending a response message to the terminal, wherein the response message is used for indicating at least one of the following:

the network side equipment receives the feedback of the uplink signal;

Optionally, the method further includes:

and sending SFN-related configuration information to the terminal, wherein the SFN-related configuration information comprises at least one of an SFN-specific reference signal, SFN-specific system information, an SFN-specific paging message and an SFN random access channel.

Optionally, the network side device sends the configuration information related to the SFN to the terminal through at least one of a system broadcast, an RRC dedicated message, and a paging message.

Optionally, the method further includes:

and if the terminal does not support the SFN, prohibiting the terminal from accessing a cell specific to the SFN.

It should be noted that, the relevant implementation manner and the relevant description in the method embodiment of fig. 2 may be applied to the embodiment of the present application, and achieve the same technical effect, and are not described herein again to avoid repetition.

In the network access method provided in the embodiment of the present application, the execution main body may be a network access device, or a control module in the network access device for executing the network access method. In the embodiment of the present application, a network access apparatus executing a network access method is taken as an example to describe the network access apparatus provided in the embodiment of the present application.

Fig. 7 is a block diagram of a network access apparatus according to an embodiment of the present application, and as shown in fig. 7, a network access apparatus 500, the network access apparatus 500 includes:

a first sending module 501, configured to send a reference signal to a terminal; the reference signal comprises a first reference signal, or comprises a first reference signal and a second reference signal; the first reference signal is a specific reference signal of a Single Frequency Network (SFN), or the second reference signal is a specific reference signal of a cell or a transmission receiving point.

Optionally, the network access apparatus 500 further includes a second sending module, configured to:

Optionally, the network access apparatus 500 further includes:

a third sending module, configured to send a third reference signal to the terminal after the terminal successfully accesses the network, where the third reference signal is a reference signal specific to a cell or a transmission receiving point.

Optionally, the network access apparatus 500 further includes at least one of the following:

a receiving module, configured to receive an uplink signal sent by the terminal, where the uplink signal is used to indicate the terminal identifier or a group identifier where the terminal is located;

and the fourth sending module is used for sending an advance indication signal to the terminal, wherein the advance indication signal comprises at least one of a wakeup signal WUS, a sleep signal GTS, a DCP and a pre-indication, and the advance indication signal is used for indicating whether the terminal receives paging messages and/or PDCCHs corresponding to the paging messages in a plurality of subsequent discontinuous reception DRX periods or indicating whether the terminal or the paging messages of the group where the terminal is located exist.

Optionally, the network access apparatus 500 further includes:

a fifth sending module, configured to send a response message to the terminal after receiving the uplink signal sent by the terminal, where the response message is used to indicate at least one of the following:

the network side equipment receives the feedback of the uplink signal;

Optionally, the network access apparatus 500 further includes:

a sixth sending module, configured to send SFN-related configuration information to the terminal, where the SFN-related configuration information includes at least one of a specific reference signal of the SFN, specific system information of the SFN, a specific paging message of the SFN, and a random access channel of the SFN.

Optionally, the network access apparatus 500 further includes:

and the access forbidding module is used for forbidding the terminal to access the cell specific to the SFN if the terminal does not support the SFN.

As shown in fig. 8, an embodiment of the present application further provides a communication device 600, which includes a processor 601, a memory 602, and a program or an instruction stored on the memory 602 and executable on the processor 601, for example, when the communication device 600 is a terminal, the program or the instruction is executed by the processor 601 to implement the processes of the foregoing network access method embodiment, and the same technical effect can be achieved. When the communication device 600 is a network-side device, the program or the instruction is executed by the processor 601 to implement the processes of the network access method embodiments, and the same technical effect can be achieved.

Fig. 9 is a schematic diagram of a hardware structure of a terminal for implementing the embodiment of the present application.

The terminal 1000 includes, but is not limited to: a radio frequency unit 1001, a network module 1002, an audio output unit 1003, an input unit 1004, a sensor 1005, a display unit 1006, a user input unit 1007, an interface unit 1008, a memory 1009, and a processor 1010.

Those skilled in the art will appreciate that terminal 1000 can also include a power supply (e.g., a battery) for powering the various components, which can be logically coupled to processor 1010 via a power management system to provide management of charging, discharging, and power consumption via the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than those shown, or combine some components, or have a different arrangement of components, and thus will not be described again.

It should be understood that in the embodiment of the present application, the input Unit 1004 may include a Graphics Processing Unit (GPU) 10041 and a microphone 10042, and the Graphics Processing Unit 10041 processes image data of still pictures or videos obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The display unit 1006 may include a display panel 10061, and the display panel 10061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1007 includes a touch panel 10071 and other input devices 10072. The touch panel 10071 is also referred to as a touch screen. The touch panel 10071 may include two parts, a touch detection device and a touch controller. Other input devices 10072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

In this embodiment of the application, the radio frequency unit 1001 receives downlink data from a network side device and then processes the downlink data to the processor 1010; in addition, the uplink data is sent to the network side equipment. In general, radio frequency unit 1001 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 1009 may be used to store software programs or instructions and various data. The memory 1009 may mainly include a program or instruction storage area and a data storage area, wherein the program or instruction storage area may store an operating system, an application program or instruction (such as a sound playing function, an image playing function, and the like) required for at least one function, and the like. Further, the Memory 1009 may include a high-speed random access Memory and may also include a nonvolatile Memory, where the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.

Processor 1010 may include one or more processing units; alternatively, processor 1010 may integrate an application processor that handles primarily the operating system, user interface, and application programs or instructions, and a modem processor that handles primarily wireless communications, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into processor 1010.

Wherein the radio frequency unit 1001 or the processor 1010 is configured to:

Optionally, the radio frequency unit 1001 or the processor 1010 is further configured to at least one of:

performing cell selection or reselection;

receiving system information sent by the network side equipment;

receiving a paging message sent by the network side equipment;

and initiating random access to the network side equipment.

Optionally, the radio frequency unit 1001 or the processor 1010 is further configured to:

measuring the reference signal;

and after the terminal successfully accesses the network, receiving a third reference signal sent by the network side equipment, wherein the third reference signal is a reference signal specific to a cell or a transmission receiving point.

sending an uplink signal to the network side equipment, wherein the uplink signal is used for indicating the terminal identification or the group identification where the terminal is located;

receiving an advance indication signal sent by the network side device, where the advance indication signal includes at least one of a wakeup signal WUS, a sleep signal GTS, a DCP, and a pre-indication, and the advance indication signal is used to indicate whether a terminal receives a paging message and/or a PDCCH corresponding to the paging message in a plurality of subsequent discontinuous reception DRX cycles, or to indicate whether there is a paging message of the terminal or a group in which the terminal is located.

receiving a response message sent by the network side device, where the response message is used to indicate at least one of the following:

the network side equipment receives the feedback of the uplink signal;

and if the terminal does not support the SFN, the terminal takes the cell special for the SFN as the cell forbidden to be accessed.

The embodiment of the application also provides network side equipment. As shown in fig. 10, the network-side device 700 includes: an antenna 71, a radio frequency device 72, a baseband device 73. The antenna 71 is connected to a radio frequency device 72. In the uplink direction, the rf device 72 receives information via the antenna 71 and sends the received information to the baseband device 73 for processing. In the downlink direction, the baseband device 73 processes information to be transmitted and transmits the information to the rf device 72, and the rf device 72 processes the received information and transmits the processed information through the antenna 71.

The above-mentioned band processing means may be located in the baseband device 73, and the method performed by the network side device in the above embodiment may be implemented in the baseband device 73, where the baseband device 73 includes a processor 74 and a memory 75.

The baseband device 73 may include, for example, at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 10, wherein one of the chips, for example, the processor 74, is connected to the memory 75 to call up the program in the memory 75 to perform the network device operation shown in the above method embodiment.

The baseband device 73 may further include a network interface 76, such as a Common Public Radio Interface (CPRI), for exchanging information with the radio frequency device 72.

Specifically, the network side device of the embodiment of the present invention further includes: the instructions or programs stored in the memory 75 and capable of being executed on the processor 74, and the processor 74 calls the instructions or programs in the memory 75 to execute the method executed by each module shown in fig. 7, and achieve the same technical effect, and are not described herein in detail to avoid repetition.

The embodiments of the present application further provide a readable storage medium, where a program or an instruction is stored on the readable storage medium, and when the program or the instruction is executed by a processor, the program or the instruction implements each process of the foregoing network access method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here.

The processor is the processor in the terminal or the network side device in the above embodiment. The readable storage medium includes a computer readable storage medium, such as a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and so on.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is configured to execute a program or an instruction to implement each process of the foregoing network access method embodiment, and can achieve the same technical effect, and the details are not repeated here to avoid repetition.

It should be understood that the chips mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip or a system-on-chip, etc.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.

While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A network access method is applied to a terminal, and is characterized by comprising the following steps:

2. The method of claim 1, wherein the performing initial access-related operations based on the received reference signal comprises at least one of:

performing cell selection or reselection;

receiving system information sent by the network side equipment;

receiving a paging message sent by the network side equipment;

and initiating random access to the network side equipment.

3. The method of claim 2, wherein the performing cell selection or reselection comprises:

measuring the reference signal;

4. The method according to claim 3, wherein the terminal receives system information sent by the network side device at a resident level; alternatively, the first and second electrodes may be,

5. The method of claim 2, wherein after the terminal successfully accesses the network, the method further comprises:

6. The method of claim 5, wherein the third reference signal is sent via a system message specific to an SFN, or via a system message specific to a cell or a transmission receiving point, or via a dedicated Radio Resource Control (RRC) message, or via a message two or a message four in a random access procedure.

7. The method of claim 2, wherein at least one of the paging message and the system message is SFN specific.

8. The method of claim 7, wherein the paging message and the system message are SFN specific; alternatively, the first and second electrodes may be,

9. The method according to claim 2, wherein the initiating random access to the network side device comprises:

10. The method according to any of claims 1 to 9, wherein the resources of the first reference signal and the resources of the second reference signal are independent of each other; alternatively, the first and second electrodes may be,

11. The method of any one of claims 1 to 9, wherein the first reference signal and the second reference signal have at least one of the following relationships:

12. The method according to any of claims 1 to 9, wherein the terminal identifies the first reference signal by at least one of a reference signal identifier, a physical cell identifier, frequency domain configuration information, time domain configuration information and code domain configuration information.

13. The method of claim 12, wherein the first physical cell identifier is the same as the second physical cell identifier; alternatively, the first and second electrodes may be,

14. The method of claim 13, wherein the first physical cell identifier is sent to the terminal by the network side device via a system message.

15. The method of claim 13, wherein the first physical cell identifier is different from the second physical cell identifier if a SFN-specific cell is deployed on the same frequency as a cell or a transmission reception point-specific cell; alternatively, the first and second electrodes may be,

16. Method according to any of claims 1 to 9, wherein if a network is deployed with a high frequency range and a low frequency range, then a SFN specific cell comprises a cell within said low frequency range, and a cell specific to a cell or a transmission reception point comprises a cell within said high frequency range; alternatively, the first and second electrodes may be,

17. The method according to any of claims 2 to 9, wherein before the receiving the paging message sent by the network side device, the method further comprises at least one of:

receiving an advance indication signal sent by the network side equipment, wherein the advance indication signal comprises at least one of a wakeup signal WUS, a sleep signal GTS, energy-saving downlink control information DCP scrambled by PS-RNTI and a pre-indication, and the advance indication signal is used for indicating whether a terminal receives a paging message and/or a PDCCH corresponding to the paging message in a plurality of subsequent discontinuous reception DRX periods or indicating whether the terminal or a paging message of a group where the terminal is located exists.

18. The method according to claim 17, wherein after said transmitting an uplink signal to the network-side device, the method further comprises:

the network side equipment receives the feedback of the uplink signal;

19. The method of claim 18, wherein the response message carries at least one of the early indication signal and indication information, wherein the indication information is used for indicating transmission receiving point information for receiving the paging message.

20. The method of claim 18, wherein the advance indicator signal is SFN-specific or cell-or transmission reception point-specific; alternatively, the first and second electrodes may be,

21. The method according to any of claims 1 to 9, wherein the reference signal comprises at least one of a synchronization signal block SSB, a CSI reference signal CSI-RS, a cell reference signal CRS, a sounding reference signal SRS, a demodulation reference signal DMRS.

22. The method according to any one of claims 1 to 9, further comprising:

23. The method of claim 22, wherein the terminal obtains the SFN-related configuration information via at least one of a system broadcast, an RRC dedicated message, and a paging message.

24. The method of claim 1, further comprising:

25. A network access apparatus, comprising:

26. The apparatus of claim 25, wherein the means for performing is configured to at least one of:

performing cell selection or reselection;

receiving system information sent by the network side equipment;

receiving a paging message sent by the network side equipment;

and initiating random access to the network side equipment.

27. The apparatus of claim 26, wherein the means for performing comprises:

a measurement sub-module for measuring the reference signal;

28. A network access method is applied to network side equipment, and is characterized in that the method comprises the following steps:

29. The method of claim 28, wherein in case the terminal is camped on a cell, the method further comprises:

30. The method of claim 28, wherein after the terminal successfully accesses the network, the method further comprises:

31. The method of claim 30, wherein the third reference signal is sent via a system message specific to an SFN, or via a system message specific to a cell or a transmission receiving point, or via a dedicated radio resource control, RRC, message two or message four in a random access procedure.

32. The method of claim 29, wherein at least one of the paging message and the system message is SFN specific.

33. The method of claim 32, wherein the paging message and the system message are SFN specific; alternatively, the first and second electrodes may be,

34. The method according to any of claims 28-33, wherein the resources of the first reference signal and the resources of the second reference signal are independent of each other; alternatively, the first and second electrodes may be,

35. The method of any one of claims 28 to 33, wherein the first reference signal and the second reference signal have at least one of the following relationships:

36. The method according to any of claims 28 to 33, wherein the terminal identifies the first reference signal by at least one of a reference signal identifier, a physical cell identifier, frequency domain configuration information, time domain configuration information and code domain configuration information.

37. The method of claim 36, wherein the first physical cell identifier is the same as the second physical cell identifier; alternatively, the first and second electrodes may be,

38. The method of claim 37, wherein the first physical cell identifier is sent to the terminal by the network side device via a system message.

39. The method of claim 37 wherein the first physical cell identifier is different from the second physical cell identifier if a cell specific to an SFN and a cell specific to a cell or a point of transmission reception are deployed on the same frequency; alternatively, the first and second electrodes may be,

40. A method according to any of claims 28-33, wherein if a network is deployed with a high frequency range and a low frequency range, then a SFN specific cell comprises a cell within the low frequency range, and a cell specific to a cell or a transmission reception point comprises a cell within the high frequency range; alternatively, the first and second electrodes may be,

41. The method according to any of claims 29 to 33, wherein before sending a paging message to the terminal, the method further comprises at least one of:

42. The method according to claim 41, wherein after said receiving the uplink signal transmitted by the terminal, the method further comprises:

the network side equipment receives the feedback of the uplink signal;

43. The method of claim 42, wherein the response message carries at least one of the early indication signal and indication information, wherein the indication information is used for indicating transmission receiving point information for receiving the paging message.

44. The method of claim 42, wherein the advance indicator signal is SFN-specific or cell-or transmission reception point-specific; alternatively, the first and second electrodes may be,

45. The method of any one of claims 28 to 33, wherein the reference signal comprises at least one of a synchronization signal block SSB, a CSI reference signal CSI-RS, a cell reference signal CRS, a sounding reference signal SRS, a demodulation reference signal DMRS.

46. The method of any one of claims 28 to 33, further comprising:

47. The method of claim 46, wherein the network side device sends the SFN-related configuration information to the terminal via at least one of a system broadcast, an RRC dedicated message, and a paging message.

48. The method of claim 28, further comprising:

49. A network access apparatus, comprising:

50. The apparatus of claim 49, further comprising a second sending module configured to:

51. The apparatus of claim 49, further comprising:

52. A terminal comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the network access method of any one of claims 1 to 24.

53. A network-side device comprising a processor, a memory, and a program or instructions stored on the memory and executable on the processor, the program or instructions when executed by the processor implementing the steps of the network access method of any one of claims 28 to 48.

54. A readable storage medium, characterized in that it stores thereon a program or instructions which, when executed by the processor, carry out the steps of the network access method according to any one of claims 1 to 24, or carry out the steps of the network access method according to any one of claims 28 to 48.